Avax
Avax XC
Role Paraglider
National origin Czech Republic
Manufacturer Gradient sro
Status In production (2016)

The Gradient Avax is a Czech single-place, paraglider designed and produced by Gradient sro of Prague. Introduced in the early 2000s, it remained in production in 2016 as the Avax XC5.[1]

Design and development

The Avax was designed as a competition glider.[1]

The design has progressed through five generations of models, the Avax, Avax 2, 3, 4 and 5, each improving on the last. The models are each named for their approximate wing area in square metres.[1]

The Avax XC5 employs a unit cell structure that uses a combination of two non-carrying ribs with double diagonal segmented ribs attached to the wing's top surface. The wing trailing edge employs mini-ribs to maintain a smooth profile.[2]

Variants

Avax RSE 24
Small-sized model for lighter pilots. Its 11.97 m (39.3 ft) span wing has a wing area of 22.62 m2 (243.5 sq ft), 73 cells and the aspect ratio is 6.38:1. The pilot weight range is 70 to 85 kg (154 to 187 lb).[1]
Avax RSE 26
Mid-sized model for medium-weight pilots. Its 12.67 m (41.6 ft) span wing has a wing area of 25.17 m2 (270.9 sq ft), 73 cells and the aspect ratio is 6.38:1. The pilot weight range is 85 to 105 kg (187 to 231 lb). The glider model is AFNOR Competition certified.[1]
Avax RSE 28
Large-sized model for heavier pilots. Its 13.20 m (43.3 ft) span wing has a wing area of 27.31 m2 (294.0 sq ft), 73 cells and the aspect ratio is 6.38:1. The pilot weight range is 95 to 120 kg (209 to 265 lb).[1]
Avax XC5 24
Small-sized model for lighter pilots. Its 12.2 m (40.0 ft) span wing has a wing area of 21.4 m2 (230 sq ft), 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is 70 to 85 kg (154 to 187 lb). The glider model is EN/LTF-D certified.[3]
Avax XC5 26
Mid-sized model for medium-weight pilots. Its 12.79 m (42.0 ft) span wing has a wing area of 23.5 m2 (253 sq ft), 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is 82 to 97 kg (181 to 214 lb). The glider model is EN/LTF-D certified.[3]
Avax XC5 28
Large-sized model for heavier pilots. Its 13.38 m (43.9 ft) span wing has a wing area of 25.7 m2 (277 sq ft), 66 cells and the aspect ratio is 6.96:1. The takeoff weight range is 95 to 118 kg (209 to 260 lb). The glider model is EN/LTF-D certified.[3]

Specifications (Avax RSE 26)

Data from Bertrand[1]

General characteristics

  • Crew: one
  • Wingspan: 12.67 m (41 ft 7 in)
  • Wing area: 25.17 m2 (270.9 sq ft)
  • Aspect ratio: 6.38:1

Performance

  • Maximum speed: 60 km/h (37 mph, 32 kn)
  • Rate of sink: 1.0 m/s (200 ft/min)

References

  1. 1 2 3 4 5 6 7 Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 19. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X
  2. ↑ Gradient sro. "Avax XC5". Archived from the original on 25 June 2016. Retrieved 29 May 2016.
  3. 1 2 3 Gradient sro. "Avax XC5 Technical Data". Archived from the original on 25 June 2016. Retrieved 29 May 2016.
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